Oxyacetylene-torch.



A. M. BAIRD.

UXYACETYLENE TORCH.

APPLICATION FILED JULY 28, 1014.

Patented Nov. 3, 1914.

EN ornrc ARCHIE M. BAIRD, OF TOJPEKA, KANSAS, ASSIGNDR TO JOEL S. COFFIN, OF ENGLEWOOD, NEW JERSEY.

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Specification of Letters Patent.

Patented Nov. 3, 1914.

Application filed July 28, 1914. Serial No. 853,581.

To all whom it may concern:

Be it known that I, Anomn M. Baum, a citizen of the United States, and a resident of Topeka, in the county of Shawnee and State of Kansas, have invented a certain new and useful Improvement in Oxyacetylene- Torches, of which improvement the following is a specification.

My invention relates to blow pipe torches used for welding and cutting metal by the combustion of acetylene gas, and its object is to effect a substantial simplification and economization of the construction of an appliance of such type; to reduce liability to leakage; and to enable the change from a right angle to a straight {lame delivery, or vice versa, to be readily and expeditiously made whenever required. A

The improvement claimed is hereinafter fully set forth.

In the accompanying drawings: Figure 1 is a view, in perspective, of an oxy-acetylene torch, embodying my invention; Fig. 2, a plan view, partly in section and on an enlarged scale, of-the torch shown in Fig. 1, with an elbow to project the flame at right angles to the line of the torch; Fig. 3, a vertical longitudinal section through the mixing chamber and discharge nozzle, on the line a a of Fig. 2; and, Fig. 41, a central sec tion through a regulating valve.

In the practice of my invention, I provide, at one end of the torch, a connection block, 1, having two parallel ports 1* and 1", extending through it, and, at the other, a mixing chamber, 2, on which there is formed a tubular lateral branch, 2, which is of elbow form and so curved that its outer end portion is parallel with the mixing chamber. An oxygen supply pipe, 3, is screwed into one side of the block, 1, communicating with the port, 1, thereof. and a regulating valve, indicated as an entirety, by A, is screwed into the opposite side of the block, the interior of the body oi the valve communicating with the adjoining endoi the port, 1.

An oxygen delivery pipe, 4, which is usually formed of copper tubing, is secured, by brazing, to the opposite end of the body of the valve, A, and extends therefrom to the mixing chamber, 2 into which it is fitted, and to which it is secured by brazing. The axis of the oxygen delivery pipe is straight and in line with that of the mixing chamber, throughout its length. Communication from the pipe, 1, to the interior of the mixing chamber is effected through a port, 2", in the wall of the chamber, of smaller diameter than the bore of the pipe, 4-.

An acetylene supply )ipe, 5, is connected to the body of a regu ating valve, designated, as an entirety, by B, which is, in turn connected to the connection block, 1, the interior of the valve body con'nnunicating w' h the adjoining end of the port, 1", thereof. An acetylene delivery pipe, 6, preferably formed of brass and of larger diameter than the oxygen delivery pipe, 4, is secured, by brazing, to the connection block, communicating with the end of the port, 1*, further from the regulating valve, B, and extends therefrom to the branch, 2", of the mixing chamber, into which branch it is fitted, and to which it is secured by brazing.

The regulating valves, A and B, are of thc needle type, and are substantially similar 1n construction, each comprising a valve body, 7, and a threaded stem, 7", engaging a female thread in the valve body and a conical ioint controlling a port or passage, 7, leading through the valve body, the stem being rotated for desired adjustments by a hand wheel, 7, on its outer end.

A tubular discharge nozzle, 8, which is fitted with a detachable tip, 8, having an outlet bore of reduced diameter, is secured to the mixing chamber, 2, opposite to, and in line with, the oxygen delivery pipe, 4. As shown in Fig. 1, the discharge nozzle is connected directly to the mixing chamber, thereby effecting a straight flame delivery, '1'. 0., one which is in line with the oxygen delivery pipe, and in Fig. 3, it is shown as connected through the intermediation of an elbow, 8", so as to effect a right angle dclivery. It will be seen that a change from one to the other delivery can be readily effected whenever desired.

In the operation of an city-acetylene torch embodying my invention, the supply pipes, 3 and 5, having, been first connected to suitable sources oi oxygen and acetylene gas supply, respectively, the regulating valve, B, of the acetylene pipe line, is opened, and the escaping gas is ignited at the outlet of the discharge nozzle. The regulating valve, A, of the oxygen pipe line, is then opened, and the current of oxygen thereby admitted to the mixing chamber, through the small port, 2*, is discharged into that of Pm '4 renl ol'oot of form 0?? "the Home of the ooelzyloiie 1 outlet of the discharge nozzle, by shor'tom ing and narrowing it so the dimensions Whic l'llVfi been found to he mos desirable for Waking pur oosos. The lor g th 01 the Loo latter om:- 1 is to olwi'i e the A o. 1 7 Zll]ll$l ll' ol: lho regulah the on pipe line.

' al desire to so Ti torch, too

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elbow off will ooolylene (lolivoify piio' f' from ports in said hloolc to T in chamber and lo the lateral bi'micl respectively, and m:- ten-filing pai'allol, and in line throughout,

with said poll-3,. 21ml, respectively, in lino with 01 lo receiving ends of "the mixing chamber and of its lateral olbow, pipes for supplying and acetylene ooh having s bho ports of zllo connection block, and a discharge nozzle connected. to the mixing mbeii in line with the oxygen delivery plpo and llZS connection block orb,

controlling said pipe, on acelylene celivery pipe leading from said port to the lateral elbow of the mixing chamber, and (llscharge nozzle connected to the mixing chamber, in line with the oxygen delivery pipe and. connection block port ilRClllE M. BALIRQ Witnesses -11. ll ooo 

